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发明名称	Level
摘要
申请公布号	US3046672(A)	申请公布日期	1962.07.31
申请号	US19590787434	申请日期	1959.01.19
申请人	LACE HARRY S	发明人	LACE HARRY S.
分类号	G01C9/32	主分类号	G01C9/32
代理机构		代理人
主权项
地址

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